class Settings():

    def __init__(self):
        self.screen_width = 1200
        self.screen_height = 800
        self.bg_color = (230,230,230)

        #飞船管理
        self.ship_speed_factor = 1.5
        self.ship_limit = 3

        #子弹管理
        self.bullet_speed_factor = 1
        self.bullet_width = 3
        self.bullet_height = 15
        self.bullet_color = (60,60,60)
        self.bullet_allowed = 3

        #外星人管理
        self.alien_speed_factor = 1
        self.fleet_drop_speed = 10
        self.fleet_direction = 1
